Background: Potential hazards of fine particulate matter (PM) constituents on preterm birth (PTB) have rarely been explored in China.
Objective: To quantify the associations of PM constituents with PTB.
Methods: This study was based on a nationwide cohort of 3,723,169 live singleton births delivered between January 2010 and December 2015 in China. We applied satellite-based estimates of 5 PM constituents (organic carbon; black carbon; sulfate; ammonium; and nitrate). We used Cox proportional hazards regression models adjusted for individual covariates, temperature, humidity, and seasonality to evaluate the associations.
Results: During the entire pregnancy, each interquartile range (29 μg/m) increase in PM concentrations was associated with a 7% increase in PTB risk [hazard ratio (HR): 1.07; 95% confidence interval (CI): 1.07-1.08). We observed the largest effect estimates on carbonaceous components (HR: 1.09; 95% CI: 1.08-1.10 for organic carbon and black carbon). Early pregnancy appeared to be the critical exposure window for most constituents. Women who were older, exposed to second-hand smoke, overweight or obese before pregnancy, conceived during winter, and living in northern China or rural areas were more susceptible.
Conclusions: Carbonaceous components of PM were associated with higher PTB risk. Findings on characteristics of vulnerability underlined targeted protections on susceptible subgroups.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2021.127645 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The short-term comprehensive impact of the phase-out of global coal combustion on air pollution and climate change.
Environ Pollut
January 2025
Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, California, 90095, USA.
With the continuous intensification of global warming, the reduction and ultimate phase-out of coal combustion is an inevitable trend in the future global energy transformation. This study comprehensively analyzed the impact of phasing out coal combustion on global emissions and concentrations of air pollutants, radiative fluxes, meteorology and climate using Community Earth System Model 2 (CESM2). The results indicate that after the global phase-out of coal combustion, there is a marked decrease in the concentrations of sulfur dioxide (SO), nitrogen oxides (NO) and fine particulate matter (PM), with some regions experiencing a reduction of exceeding 50%.
View Article and Find Full Text PDFHigher population density is associated with worse air quality and related health outcomes in Tāmaki Makaurau.
Aust N Z J Public Health
January 2025
Department of Epidemiology and Biostatistics, University of Auckland, New Zealand.
Objectives: To explore associations between population density, air pollution concentrations, and related health outcomes in Tāmaki Makaurau Auckland, Aotearoa New Zealand.
Methods: Concentrations of nitrogen dioxide (NO) and fine particulate matter (PM) and associated health outcomes (premature mortality, cardiovascular and respiratory hospitalisations, and childhood asthma) were obtained from the Health and Air Pollution in New Zealand 2016 study. The possible mediating factors assessed were motor vehicle traffic, domestic fires, local industry, and green space.
Particulate matter and potentially toxic element content in urban ornamental plant species to assess pollutants trapping capacity.
J Environ Manage
January 2025
Department of Plant Biology and Ecology, University of Seville, Avda. Reina Mercedes S/n, Apartado de Correos, 1095, 41012, Sevilla, Spain. Electronic address:
Urban environments are usually polluted by anthropogenic activities like traffic, a major source of potentially toxic elements (PTEs), and ornamental plant species may reduce contamination by trapping traffic-related air pollutants in their leaves. The purpose of this study was tested the trapping pollutant capacity of four species commonly used in green areas of Seville city (SW Spain) to better choose species in urban green planning. Composition of particulate matter (PM) obtained from foliar surfaces (sPM) and wax-included (wPM) was determined by EDX-SEM analysis in samples from different city locations.
View Article and Find Full Text PDFParticle-bound mercury in Saharan dust-loaded particulate matter in Cabo Verde.
J Hazard Mater
December 2024
Leibniz Institute for Tropospheric Research (TROPOS), Leipzig 04318, Germany. Electronic address:
Particle-bound mercury (PBM) concentrations in particulate matter (PM), PM10 and PM2.5, were investigated during dust and non-dust events at urban and rural sites in Cabo Verde, Africa. During dust events, PBM averaged 35.
View Article and Find Full Text PDFEnhancing air quality predictions in Chile: Integrating ARIMA and Artificial Neural Network models for Quintero and Coyhaique cities.
PLoS One
January 2025
Escuela de Ingeniería Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
In this comprehensive analysis of Chile's air quality dynamics spanning 2016 to 2021, the utilization of data from the National Air Quality Information System (SINCA) and its network of monitoring stations was undertaken. Quintero, Puchuncaví, and Coyhaique were the focal points of this study, with the primary objective being the construction of predictive models for sulfur dioxide (SO2), fine particulate matter (PM2.5), and coarse particulate matter (PM10).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!